COVID-19 vaccination and the behavioral immune system: The newcomer and the old friend get along in preventing infection
Brain, Behavior, & Immunity - Health(2023)
摘要
Despite its old evolutionary history and emotional relevance, the behavioral immune system is one of the less studied individual predictors of vaccine uptake. To fill the gap, we conducted a large online study (2072 participants) during the spring 2022 when the great majority of the Italian population had already received at least one dose of the COVID-19 vaccine. Hierarchical binary logistic regression showed that, after controlling for the confounding effects of demographic and personality factors, there was a significant and positive association between pathogen disgust sensitivity and COVID-19 vaccine uptake (OR, 1.68; 95% CI, 1.42–1.99). The likelihood of being vaccinated for a participant with the highest possible score on the PVD Germ Aversion scale was approximately 12 times higher than the likelihood for a participant with the lowest possible score. Public health messaging could leverage the activation of the behavioral immune system as an emotional driver of vaccine uptake.
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关键词
COVID-19,Vaccine,Behavioral immune system,Pathogen disgust,Germ aversion
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